From: Joel Koltner on 14 Jun 2010 22:40 "Greg Hanson" <greghanson(a)prograde.com> wrote in message news:4c16de29.15315750(a)news.tpg.com.au... > OK, but the commercial audio editing software I use (CoolEdit) only > generates a stereo signal. If I open a second instance of it, how do I > force it to address the second soundcard? Not being a Cool Edit user, I don't know off-hand, but Cool Edit does claim to support multiple sound cards, so a search through the help files or just the menu options should be revealing. Note that you probably should prefer a single audio card over several if your goal is to keep everything in lock-step sync: If you use multiple cards, they'll likely each have their own clock generators that will be ever so slightly different in frequency and hence the audio output will slowly get out of sync unless your software is very much on top of this and can insert or delete samples to "fix" it (I'd be surprised if most software had such an option...) > Another respondent mentioned 4 track recorders. My associate Ken (the > OP) said he looked into these and, while they record 4 channels for > mixing purposes, only 2 can be output, as a conventional stereo > signal. At least for the lower cost models examined. Most soundcards these days support 5.1 audio, so perhaps you could just use front L+R and rear L+R for your four outputs? ---Joel |